Jittery Motion With 24 volt Nema 23

Other Hardware Motors, Mechanics, Power and CNC
4

@jremington I see. I have the limit set at 2.8A. I've tried to use lower limits but still get the same jittery motion. The power supply led stays lit so i do not think its failing.

@MarkT I tried your suggestions. I used a moveTo() call when I receive the input from Serial but still get the jittery motion. Also, I cannot get the motor to move backward. I'm new to using the AccelStepper library. I've used the runToNewPosition() call with a Nema 17 motor and had no issue which is why I used it with the larger motor. I tried two versions of new code. The first is the Random example from the AccelStepper library.

#include <AccelStepper.h>

AccelStepper stepper(1, 6, 5);

void setup()
{  
}

void loop()
{
  if (stepper.distanceToGo() == 0)
  {
    delay(1000);
    stepper.moveTo(rand() % 200);
    stepper.setMaxSpeed((rand() % 200) + 1);
    stepper.setAcceleration((rand() % 200) + 1);
  }
  stepper.run();
}

The second, I used the moveTo() call.

#include <AccelStepper.h>
AccelStepper stepper(1, 6, 5);

void setup() {

  Serial.begin(9600);

}

void loop() {
  stepper.run();
  if (Serial.available() > 0) {
    char input = Serial.read();

    if (input == '0') {
      stepper.moveTo(200);
      stepper.setMaxSpeed(200);
      stepper.setAcceleration(150);
    } else if (input == '1') {
      stepper.moveTo(-200);
      stepper.setMaxSpeed(200);
      stepper.setAcceleration(150);
   }
 }
}

I found I had to add the setMaxSpeed() and setAcceleration() calls in order to get something out of the stepper. Still get jittery motion and cannot get the stepper to reverse direction.